Seiko Cal. 3878 - 706

This Hand-Winding model from 1970 features a 37mm Gold-Plated case. It features a Silver dial protected by a Sapphire crystal and offers 110m of water resistance. [seikata-wm-0102b765715a]

Also known as: World Timer, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

9.5mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

Silver

Jewels

19j

Frequency

28,800 bph

Power Reserve

72 hours

Year

1970

Related Models

• Seiko 7095-942
• Seiko 7191-785
• Seiko 6125-896
• Seiko 0721-406
• Seiko 6620-732
• Seiko 4431-770
• Seiko 3833-272
• Seiko 3883-859
• Seiko 0781-313
• Seiko 5269-780
• Seiko 3832-213
• Seiko 5619-125